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### - i -

- index() : QCPLayer
- indexToRowCol() : QCPLayoutGrid
- initializeParentPlot() : QCPLayerable
- insert() : QCPBarsGroup
- insertColumn() : QCPLayoutGrid
- insertRow() : QCPLayoutGrid
- insetAlignment() : QCPLayoutInset
- insetLayout() : QCPAxisRect , QCPPolarAxisAngular
- insetPlacement() : QCPLayoutInset
- insetRect() : QCPLayoutInset
- interface1D() : QCPAbstractPlottable1D< DataType > , QCPAbstractPlottable , QCPErrorBars
- intersection() : QCPDataRange , QCPDataSelection
- intersects() : QCPDataRange
- inverse() : QCPDataSelection
- inverted() : QCPColorGradient
- isActive() : QCPSelectionRect
- isEmpty() : QCPBarsGroup , QCPColorMapData , QCPDataContainer< DataType > , QCPDataRange , QCPDataSelection , QCPMarginGroup
- isNone() : QCPScatterStyle
- isNull() : QCPVector2D
- isPenDefined() : QCPScatterStyle
- isValid() : QCPDataRange
- item() : QCPLegend , QCustomPlot
- itemAt() : QCustomPlot
- itemClick() : QCustomPlot
- itemCount() : QCPLegend , QCustomPlot
- itemDoubleClick() : QCustomPlot
- items() : QCPAxis , QCPAxisRect
- itemWithPlottable() : QCPLegend